What must be modified in the SWPPP when changes occur at the facility?

When changes occur at a facility, it is crucial to modify the Storm Water Pollution Prevention Plan (SWPPP) itself. The SWPPP is a living document designed to reflect the current conditions and operations at the facility. Modifications are necessary to ensure that the plan accurately addresses new practices, control measures, or changes in site layout that could affect stormwater management. This might include changes in the types of pollutants discharged, the introduction of new processes or equipment, or alterations in the geography or hydrology of the site. Maintaining an up-to-date SWPPP is essential for compliance with environmental regulations and ensuring effective stormwater pollution prevention practices.

The other choices, while they can be relevant in certain contexts, do not specifically address the need for modifications to the SWPPP itself when operational changes occur. The inspector may change as part of normal staffing, but this does not directly relate to how the plan should be updated. Compliance deadlines and permit terms are typically set by regulatory bodies and may not directly reflect modifications needed at the facility level unless explicitly stated in those terms.